# Title     : TODO
# Objective : TODO
# Created by: masaikk
# Created on: 2020/12/12
#
#df1 = data.frame(SiteId = c(1:6), Site = c("Google", 'Taobao', 'Facebook', 'Zhihu', 'Weibo'))
#df2 = data.frame(SiteId = c(2, 4, 6, 7, 8), c1 = c('c1', 'c2', 'c3', 'c4', 'c5'))
#df1 = merge(x = df1, y = df2, by = SiteTd)
#print(df1)
